How do I find the benchmark numbers for 783?
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Benchmark Numbers
In this lesson you will learn how to locate benchmark
numbers by using a number line.
Let’s ReviewLet’s Review
Rounding - To find a number that is close to a given number.
l l l l l l l l l l lBakery
Morgan
Ashley Pizza
Let’s ReviewLet’s Review
Reading a Number Line
l l l l l l l l l 10 20 11 12 13 14 15 16 17 18
19 l l l l l l l l l 100 200 110 120 130 140 150 160 170 180
190
l l l l l l l l l 1000 2000 1100 1200 1300 1400 1500 1600 1700 1800 1900
Let’s ReviewA Common Mistake
Thinking that the increments on a number line always signify counting by
ones.
l l l l l l l l l 300 400 310 320 330 340 350 360 370 380 390
Let’s ReviewCore Lesson
l l l l l l l l l l l
What are the benchmark numbers for
783?
l l l l l l l l l l l
783
700 800
780 790
783
783
Let’s ReviewCore Lesson
l l l l l l l l l l l
What are the benchmark numbers for
2,356?
l l l l l l l l l l l
2,356
2000 3000
2300 2400
2,356
2,356
Let’s ReviewCore Lesson
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What are the benchmark numbers for
985?
l l l l l l l l l l l985
900 1000
980 990
985
985
In this lesson you have learned how to locate benchmark
numbers by using a number line.
Let’s ReviewGuided Practice
Draw a number line. What are the benchmark numbers for 4,721 in hundreds?Where would you place 4,721 on the number line?
Let’s ReviewExtension Activities
Draw 3 number lines.
Find the benchmark numbers for 3,827 in thousands, hundreds, and tens.
Place 3,827 on each of the number lines.
Let’s ReviewQuick Quiz
What are the benchmark numbers in thousands for 3,874?
Let’s ReviewQuick Quiz
What are the benchmark numbers in hundreds for 7,923?